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The dial of a household electric energy meter is marked with the word "600r / kW · H". When only one electric appliance is connected to the circuit and it works normally, the rated power of the electric appliance is () A. 3600WB. 1000WC. 500WD. 100W
The electric energy consumed by 10 revolutions w = 1600kw · h × 10 = 160kW · h, and the rated power P = wt = 160kW · h, 160H = 1kW = 1000W
The panel of a household electric energy meter is marked with the word 3000 rpm, which is connected to a 200 V 300 W electric appliance. When it works normally, the turntable of the electric energy meter will rotate in one minute?
1 minute = 1 / 60 hour
300W = 0.3kw
The electric energy consumed by a 200V 300W electric appliance in one minute is w = P * t = (300 * 10 ^ - 3) * (1 / 60) = 0.3 / 60 = 0.005 kwh
Within 1 minute, the turntable of electric energy meter rotates 3000 * 0.005 = 15 turns
An electric heater is marked with "220V 80W". If it is connected to 110V power supply, how much is the actual power? How much is the power consumption?
The actual power is half 40 watts, power consumption: 40 / 1000 × 10 / 60 ≈ 0.0067 degrees
There are words of 220 V, 40 W and 110 V, 40 W and 36 V, 40 W on the three electric heaters. They have all been connected for 10 s. how much heat is generated? How to calculate
All are 40 * 10 = 400
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